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A007922 as a simple table

na(n)
11
22
33
44
55
66
77
84
99
1010
1111
126
1313
1414
155
166
1717
1812
1919
2010
217
2222
2323
246
2515
2626
279
2814
2929
3010
3131
328
3311
3434
357
3612
3737
3838
3913
4010
4141
4214
4343
4422
459
4646
4747
486
4921
5020
5117
5226
5353
5418
5511
5614
5719
5858
5959
6010
6161
6262
639
648
6513
6622
6767
6834
6923
7014
7171
7212
7373
7474
7515
7638
7711
7826

[1,2,3,4,5,6,7,4,9,10,11,6,13,14,5,6,17,12,19,10,
 7,22,23,6,15,26,9,14,29,10,31,8,11,34,7,12,37,38,
 13,10,41,14,43,22,9,46,47,6,21,20,17,26,53,18,11,
 14,19,58,59,10,61,62,9,8,13,22,67,34,23,14,71,12,
 73,74,15,38,11,26]